Drain-inlet guard.



A. J. SHEPARD. DRAIN INLET GUARD. APPLIOATION FILED JULY 20,1908.

Patented Sept. 29, 1908.

FIR

* GWWW Inventor L at Attorney Witnesses. (/MK 1 m.S.($ d.w..

UNITED STATES PATENT OFFICE.

ANDREW J. SHEPARD, OF COLLEGE CORNER, OHIO, ASSIGNOR OF ONE-THIRD TO HENRY I SHEPARD, OF HAMILTON, OHIO.

DRAIN-INLET GUARD.-

Specification of Letters Patent.

Patented Sept. 29, 1908.

To all whom it may concern:

Be it known that I, ANDREW J. SHEPARD, a citizen of the United States, residing at College Corner, Butler county, Ohio, have invented certain new and useful Improvements in Drain-Inlet Guards, of which the following is a specification.

This invention pertains to guards for the inlet end of drain pipes and is designed to facilitate the guarding of the inlet against the admission of trash, and to guard against the closing of the inlet by the accumulation of trash, and to provideagainst the choking of the drains in case of sudden violent flooding.

The improvements will be readily understood from the following description taken in connection with the accompanying drawing in Wl'liCllZ- Figure 1 is a vertical longitudinal section of my improved guard: and Fig. 2 a plan of the same, both views illustrating also the initial end of the drain pipe.

In the drawing :1 indicates an ordinary drain pipe laid under ground or in a trench: 2, the upturned inlet endof the drain pipe: 3, an open-topp connected with the inlet end of the drain ipe, the pipe entering through the floor of the box: 4, guard-bars disposed side by side and formin the roof of the box, these bars being incline so as to present the slo ing surface formed by them against the irection in which the inflowing waters are received by the box and drain pipe: 5, the u per ends of the guard-bars, passing forwar y over the front wall of the box: 6, an air-pi 'e connected with the drain pipe a short istance fromthe inlet end of the latter and extending back to a point below the box: and 7, the upturned inlet end of the air-pipe, the same extending up through the wal of the box to p.) point some distance above the top of the The guard-bars 4 have their rear ends seated in sockets in the inner surface of the rear wall of the box, the forward ends 5 of the bars being turned downwardly in front of the box and then turned rearwardly and passed through the front wall of the box, nuts being rovided on these inturned ends to keep the bars from forward displacement.

The waters received'by the drain are to be assumed as coming from the left and reaching the sloping sur ace formed by the guardbars, the water then passing downward beair cannot rise from the drain pipe.

ed box formed of concrete- .tion where it forms tween the guard-bars, and into the box and thence into and way through the drain pipip. t e

As intercepted trash is accumulated by sloping surface formed by the guard-bars, it becomes washed upwardly alon the sloping surface and over and off of the forward portion of the bars and lodged forward of the box. In case of a heavy or sudden flood, requiring the maximum passing capacity for the guard, any accumulated trash is quickly swept upwardly and onwardly beyond the box, .owing to the comparatively smooth uninterrupted surface formed by the guardbars, and at the same time the sloping character of the surface formed by the bars tends to offer free invitation for the entry of water into the box and drain pipe.

It often occurs that in the case of sudden violent flooding the Water so thoroughly seals the spaces between the guard-bars that the p In the present case the air-pipe provides for the air leaving the pipe in advance of the in-rushing water and through an outlet independent of the guard. The location of the inlet end of the air-pipe at the box permits it to be well supported by the box and brings it to a posipractically no more obstruction to the land than does the box alone, and at the same time the box and the inlet end of the air-pipe are brought so close to each other as to be subject to an inspection in common. The inlet end of the air-pipe requires to project some distance above the surface and, being immediately at the guardbox, is in territory where it is not likely to be injured during the cultivation of land, and at the same time the land elsewhere than in the neighborhood of the guard-box is left uninterfered with.

M improvements are adapted for agricultura drains generally. Where there is a single inlet to the main drain there will be a single one of the drain guards, and where a drain pipe is provided with several inlet branches the inlet end of each branch will of course be provided with one of the inletguards, it being understood, however, that in p open-topped box formed of concrete and adapted to have the inlet end of a drain pipe connected with'its base, and a series of guardbars arranged parallel with each other and forming the roof to the box, the series of guard-bars forming an inclined surface from one end to the other of the liars, combined substantially as set forth.

2. A drain inlet guard comprising, an open-topped box formed of concrete and adapted to have the inlet end of a drain pipe connected with its base, and a series of guard bars arranged parallel with each other and forming the roof to the box, the series of guard-oars forming an inclined surface from one end to the other of the bars, the higher ends of the gu ard-bars passing over and beyond the wall of the guard-box, combined substantially as set forth.

3. A drain inlet guard comprising, an open-topped box formed of concrete and adapted to have the inlet end of a drain pipe connected with its base and having a front wall higher than the rear wall, a series of guard-bars arranged parallel with each other and arranged upon an inclination, the lower ends of the guard-bars being socketed into the lower wall of the guard-b ox and their upper ends projecting over the higher wall of the guardbox, combined substantially as set forth.

4. A drain inlet guard comprising, an open-topped box formed of concrete and adapted to have the inlet end of a drain pipe connected with its base and having a front rearwardly through that wall, combined substantially as set forth.

5. A drain inlet guard comprising, a drain pipe having an upturned inlet end, an opentopped guard-box connected with the inlet end of the drain pipe, a series of guard-bars disposed parallel with each other and forming a guarded roof for the guard-box, an airpipe connected with the drain pipe at a point a distance from the guard-box, and an upturned inlet end for said air-pipe connected with the guard-box, combined substantially as set forth.

ANDREW J. SHEPARD.

Witnesses ROBERT A. HooKnRsMrrn, N. J. Moon. 

